Permutation-lock.



No. 672,|74. Patented Apr. le, mol.

n. A. LEonARn.

' PanmuTATloN Lock.

(Alpumion med septu s, 1900.)

(No Modell) mlm!! w M-mml UNITED STATES IATENTv OFFICE.

DAVID A. LEONARD, OF SHANNON, ILLINOIS.

PERMUTATIoN-LOCK.

snoIFIcATIoN forming part bf Letters-Patent No. 672,1;74, dated Apri 16,1901. Application filed September 8, 1900. Serial No. 29,399. (Nomodel.)

To @ZZ whom, it 7am/concern:

Be it known that I, DAVID A. LEONARD, a citizen of the United States,residing at Shannon, in the county of Carroll and State of Illinois,haveinvented certain new. and useful Improvements in Permutation Locks,of which the following is a specification.

This invention relates to improvementsin permutation-locks, and is moreparticularly designed as an improvement in locks of this class designedas padlocks and locks for use upon bicycles.

One object of the present invention is to provide an improved form oflock of simple and durable construction and one'which is so constructedas to dispense with the necessity ofV using rivets on a lock for thepurpose of holding the parts together.

A further object of the invention is to provide a lock comprehending inits structure such anarrangement as to preclude the possibility of thesaine being picked or otherwise tampered with.

With these and other objects in view, which will appear as the nature ofthe improvements is better understood, theinvention consists,substantially, in the novel construction, combination, and arrangementof parts, as will be hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the appended claims.

In the drawings, Figure 1 is a sideelevation, partly in section, of apermutation-lock constructed iu accordance with the present invention.Fig. 2v is a side elevation of a lockingsleeve for the tumbler-rings.Fig. 3 is a face elevation of one of the tumbler-rings. Fig. 4 is atransverse sectional view thereof. Fig. 5 is a side elevationillustrating the tumbler-rings assembled, and Fig. 6 is a similar viewofthe body vof the lock with the hasp portion thereof open.

Referring to the drawings, the numeral lv designates a cylindricalshank, which'shank forms the body ofthe lock, and said shank is providedat one of its ends with a semicircular arm 2, to which arm is pivoted asimilarlyshaped hasp 3, the shank 1 at the juncture of the arm 2therewith being provided with a rabbeted portion 4, in which fits thecontact-head 5, carried at the 4free end of the hasp 3. When the head 5lies within the rabsleeve 6 in order to prevent displacement of thetumbler-rings when the same have been mounted on said sleeve. V

. The numeral 10 designates a series of tum` bler-riugs, each of whichis provided with a rabbeted portion 11, and formed in one face of eachof said rings is a pair of annular grooves 12, the inner one of which isof less diameter than the outer one and having a radial slot 13 formedtherein. The opposite l face, of each of the rings l() is beveled, as at14, andsaid beveled portion extends to the inner edge of the innergroove 12. It will be observed, however, that the tumbler which liesimmediately adjacent to the locking-head 5 is closed at its outer faceand abuts against the adjacent bead 9 of the locking-sleeve 6, and afterthe rings 10 have been assembled upon said sleeve the locking-washer 14is sprung into place and ts within the outer groove 1'2 of the lastring, or that ring which is vthe most remote from the hasp 3. It willalso be observed that by reason of the rabbeted portions 11 of the rings10 said rings snugly t within each other, and in order to assemble saidrings upon the locking-sleeve 6 the edges of the latter along thedivided portion are sprung together and the rings slip into place,`together with the washer 14, after which pressure is removed from thesleeve 6, whereupon the edges thereof spring apart,and thus secure therings in place.

The shank 1 is provided at suitable intervals with a series oftransversely-extending recesses 15, and arranged in said recesses is aseries of "locking-pins 16, which' are normally pressed outwardlythrough the medium of coil-springs 17, arranged in the inner ends of therecesses-l5. The outer ends of the pins 16 are adapted to projectthrough the slot 8 ofthe sleeve 6 and normally lie within the Vinnergrooves 12 of the tu mbler-riugs 10, and by reason of this arrangementit is obvious IOO that said rings 10 are incapable of any longitudinalmovement whatever upon the shank 1 until the combination is set, and inorder to provide for such combination each of the tumbler-rings 10hasupon its periphery a series of characters 18, which in the presentinstance are shown as numerals arranged from 0 t'o C( 9.77

The manner of operating the herein described lock is as follows: Withthe parts in the position shown in Fig. l and it is desired to open thelock, the'same may be accomplished by bringing the characters con`stituting the combination in line with a mark carried by the tumbler 10immediately adjacent to the hasp. In the present case the combination is3142, and when these characters have been brought in alinement with saidmark the radial slots 13 will have been broughtinto longitudinalalinement. By applying pressure to the tu mbler-rings 10 in thedirection away from the hasp3 said rings will slide along the shank l,together with the sleeve 6, and the pins 16 will pass through the slots13, the extent of such sliding movement being sucient to withdraw theend of the sleeve 6 adjacent to the locking-head 5 from the latter, andsaid hasp will therefore be capable of being opened. 'lo close the haspand secure the same in locked position, it is simply necessary to movethe rings 10, together with the sleeve 6, toward the hasp afterlocking-head 5 has been positioned in the rabbeted portion 4, the pins16 being forced into the recesses l5 by the beveled faces 14 of therings l0, and thereby permitting the movement of the rings mentioned,such movement being accomplished irrespective of the position of theradial slots 13 in their relation to the pins 1G.

Having thus described theinvention, what is claimed as new, and desiredto be secured by Letters Patent, is

1. In a lock of the class described, the combination with a shank havinga hasp pivoted thereto, said hasp being provided with a locking-head, ofa locking-sleeve slidably mounted upon said shank and provided with aslot, said sleeve being adapted to en gagelsaid locking-head forretaining the hasp in closed position, a series of spring-pressed pinsarranged in said shank and projecting through the slot of said sleeve,and a series of tumbler-rings mounted upon said sleeve and each providedwith a radial slot adapted to receive said pins when the combination isset, whereby the sleeve is adapted to be freed from engagement with thelocking-head, said tumblerrings being also provided with beveled facesfor permitting the return of the tumbler-rings and the locking-sleeveinto engagement with the locking-head for locking the hasp in closedposition.

2. In a lock ofthe class described, the combination with a shank, havinga hasp pivoted thereto, said hasp being provided with a locking-head, ofa locking-sleeve slidably mounted upon said shank and provided withaslot, spring-pressed pins arranged in said shank and projecting fromsaid slot, and a series of tumbler -rings mounted upon thelockingsleeve, and each provided at one of its faces with a series ofgrooves, one of said grooves being of less diameter than the other andprovided with a radial slot, said slot being adapted to receive saidpins when the combination is set, whereby the locking-sleeve ol thetumbler-rings are adapted to Vbe moved away from thehasp to release thelatter, the tumbler-rings being also provided with beveled faces adaptedto depress the pins, whereby the locking-sleeve is adapted to be broughtinto engagement with the locking-head for retaining the hasp in closedposition.

In testimony whereof I affix my signature in presence of two witnesses.

DAVID A. LEONARD.

Witnesses:

C. M. HEALY, W. A. KUTZ.

